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        <a href="npyscreen-module.html">Package&nbsp;npyscreen</a> ::
        Module&nbsp;screen_area
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<h1 class="epydoc">Source Code for <a href="npyscreen.screen_area-module.html">Module npyscreen.screen_area</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-comment">#!/usr/bin/env python</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">curses</tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">curses</tt><tt class="py-op">.</tt><tt class="py-name">panel</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">curses</tt><tt class="py-op">.</tt><tt class="py-name">wrapper</tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt id="link-0" class="py-name" targets="Module npyscreen.pmfuncs=npyscreen.pmfuncs-module.html"><a title="npyscreen.pmfuncs" class="py-name" href="#" onclick="return doclink('link-0', 'pmfuncs', 'link-0');">pmfuncs</a></tt> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">os</tt> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"><tt class="py-comment"># For more complex method of getting the size of screen</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">import</tt> <tt class="py-name">fcntl</tt><tt class="py-op">,</tt> <tt class="py-name">termios</tt><tt class="py-op">,</tt> <tt class="py-name">struct</tt><tt class="py-op">,</tt> <tt class="py-name">sys</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"> </tt>
<a name="ScreenArea"></a><div id="ScreenArea-def"><a name="L12"></a><tt class="py-lineno"> 12</tt> <a class="py-toggle" href="#" id="ScreenArea-toggle" onclick="return toggle('ScreenArea');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="npyscreen.screen_area.ScreenArea-class.html">ScreenArea</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ScreenArea-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="ScreenArea-expanded"><a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line">        <tt class="py-docstring">"""A screen area that can be safely resized.  But this is a low-level class,</tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt>  <tt class="py-line"><tt class="py-docstring">        object you are looking for."""</tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"> </tt>
<a name="ScreenArea.__init__"></a><div id="ScreenArea.__init__-def"><a name="L16"></a><tt class="py-lineno"> 16</tt> <a class="py-toggle" href="#" id="ScreenArea.__init__-toggle" onclick="return toggle('ScreenArea.__init__');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="npyscreen.screen_area.ScreenArea-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">lines</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">,</tt> <tt class="py-param">columns</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">,</tt>  </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line">                        <tt class="py-param">minimum_lines</tt> <tt class="py-op">=</tt> <tt class="py-number">24</tt><tt class="py-op">,</tt> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt>  <tt class="py-line">                        <tt class="py-param">minimum_columns</tt> <tt class="py-op">=</tt> <tt class="py-number">80</tt><tt class="py-op">,</tt> </tt>
<a name="L19"></a><tt class="py-lineno"> 19</tt>  <tt class="py-line">                        <tt class="py-param">show_atx</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt><tt class="py-op">,</tt>  </tt>
<a name="L20"></a><tt class="py-lineno"> 20</tt>  <tt class="py-line">                        <tt class="py-param">show_aty</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt><tt class="py-op">,</tt> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line">                         <tt class="py-op">**</tt><tt class="py-param">keywords</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ScreenArea.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++++++"></div><div id="ScreenArea.__init__-expanded"><a name="L22"></a><tt class="py-lineno"> 22</tt>  <tt class="py-line"> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line">                 </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line">        <tt class="py-comment"># Putting a default in here will override the system in _create_screen. For testing?</tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt>  <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">lines</tt><tt class="py-op">:</tt>       <tt class="py-name">minimum_lines</tt>   <tt class="py-op">=</tt> <tt class="py-name">lines</tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">columns</tt><tt class="py-op">:</tt>     <tt class="py-name">minimum_columns</tt> <tt class="py-op">=</tt> <tt class="py-name">columns</tt> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt>  <tt class="py-line"> </tt>
<a name="L29"></a><tt class="py-lineno"> 29</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt> <tt class="py-op">=</tt> <tt class="py-name">lines</tt> <tt class="py-comment">#or 25</tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt> <tt class="py-op">=</tt> <tt class="py-name">columns</tt> <tt class="py-comment">#or 80</tt> </tt>
<a name="L31"></a><tt class="py-lineno"> 31</tt>  <tt class="py-line"> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">min_l</tt> <tt class="py-op">=</tt> <tt class="py-name">minimum_lines</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">min_c</tt> <tt class="py-op">=</tt> <tt class="py-name">minimum_columns</tt> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line"> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line">                <tt class="py-comment"># Panels can be bigger than the screen area. These two variables</tt> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-comment"># set which bit of the panel should be visible.</tt> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-comment"># ie. They are about the virtual, not the physical, screen.</tt> </tt>
<a name="L38"></a><tt class="py-lineno"> 38</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_from_y</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_from_x</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_atx</tt> <tt class="py-op">=</tt> <tt class="py-name">show_atx</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_aty</tt> <tt class="py-op">=</tt> <tt class="py-name">show_aty</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">ALL_SHOWN</tt> <tt class="py-op">=</tt> <tt class="py-name">False</tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt>  <tt class="py-line"> </tt>
<a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-1" class="py-name" targets="Method npyscreen.screen_area.ScreenArea._create_screen()=npyscreen.screen_area.ScreenArea-class.html#_create_screen"><a title="npyscreen.screen_area.ScreenArea._create_screen" class="py-name" href="#" onclick="return doclink('link-1', '_create_screen', 'link-1');">_create_screen</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line"> </tt>
<a name="ScreenArea._create_screen"></a><div id="ScreenArea._create_screen-def"><a name="L46"></a><tt class="py-lineno"> 46</tt> <a class="py-toggle" href="#" id="ScreenArea._create_screen-toggle" onclick="return toggle('ScreenArea._create_screen');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="npyscreen.screen_area.ScreenArea-class.html#_create_screen">_create_screen</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ScreenArea._create_screen-collapsed" style="display:none;" pad="+++" indent="++++++++++++"></div><div id="ScreenArea._create_screen-expanded"><a name="L47"></a><tt class="py-lineno"> 47</tt>  <tt class="py-line">         </tt>
<a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line">                <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt>  <tt class="py-line">                        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines_were_auto_set</tt><tt class="py-op">:</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt>  <tt class="py-line">                        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">cols_were_auto_set</tt><tt class="py-op">:</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt> <tt class="py-op">=</tt> <tt class="py-name">None</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line">                <tt class="py-keyword">except</tt><tt class="py-op">:</tt> <tt class="py-keyword">pass</tt> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line"> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt>  <tt class="py-line">                 </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt><tt class="py-op">:</tt>  </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-2" class="py-name" targets="Method npyscreen.screen_area.ScreenArea._max_physical()=npyscreen.screen_area.ScreenArea-class.html#_max_physical"><a title="npyscreen.screen_area.ScreenArea._max_physical" class="py-name" href="#" onclick="return doclink('link-2', '_max_physical', 'link-2');">_max_physical</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">+</tt><tt class="py-number">1</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines_were_auto_set</tt> <tt class="py-op">=</tt> <tt class="py-name">True</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt><tt class="py-op">:</tt>  </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-3" class="py-name"><a title="npyscreen.screen_area.ScreenArea._max_physical" class="py-name" href="#" onclick="return doclink('link-3', '_max_physical', 'link-2');">_max_physical</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">+</tt><tt class="py-number">1</tt> </tt>
<a name="L59"></a><tt class="py-lineno"> 59</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">cols_were_auto_set</tt> <tt class="py-op">=</tt> <tt class="py-name">True</tt> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt>  <tt class="py-line"> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">min_l</tt> <tt class="py-op">&gt;</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt><tt class="py-op">:</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">min_l</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line"> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">min_c</tt> <tt class="py-op">&gt;</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt><tt class="py-op">:</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">min_c</tt> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt>  <tt class="py-line"> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line">                <tt class="py-comment">#self.area = curses.newpad(self.lines, self.columns)</tt> </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">curses_pad</tt> <tt class="py-op">=</tt> <tt class="py-name">curses</tt><tt class="py-op">.</tt><tt class="py-name">newpad</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt><tt class="py-op">)</tt> </tt>
<a name="L69"></a><tt class="py-lineno"> 69</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">max_y</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">max_x</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt> </tt>
</div><a name="L70"></a><tt class="py-lineno"> 70</tt>  <tt class="py-line">                <tt class="py-comment">#self.max_y, self.max_x = self.curses_pad.getmaxyx()</tt> </tt>
<a name="L71"></a><tt class="py-lineno"> 71</tt>  <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="ScreenArea._max_physical"></a><div id="ScreenArea._max_physical-def"><a name="L72"></a><tt class="py-lineno"> 72</tt> <a class="py-toggle" href="#" id="ScreenArea._max_physical-toggle" onclick="return toggle('ScreenArea._max_physical');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="npyscreen.screen_area.ScreenArea-class.html#_max_physical">_max_physical</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ScreenArea._max_physical-collapsed" style="display:none;" pad="+++" indent="++++++++++++"></div><div id="ScreenArea._max_physical-expanded"><a name="L73"></a><tt class="py-lineno"> 73</tt>  <tt class="py-line">                <tt class="py-docstring">"How big is the physical screen?"</tt> </tt>
<a name="L74"></a><tt class="py-lineno"> 74</tt>  <tt class="py-line">                <tt class="py-comment"># On OS X newwin does not correctly get the size of the screen.</tt> </tt>
<a name="L75"></a><tt class="py-lineno"> 75</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-comment"># let's see how big we could be: create a temp screen</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-comment"># and see the size curses makes it.  No good to keep, though</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line">                        <tt class="py-name">mxy</tt><tt class="py-op">,</tt> <tt class="py-name">mxx</tt> <tt class="py-op">=</tt> <tt class="py-name">struct</tt><tt class="py-op">.</tt><tt class="py-name">unpack</tt><tt class="py-op">(</tt><tt class="py-string">'hh'</tt><tt class="py-op">,</tt> <tt class="py-name">fcntl</tt><tt class="py-op">.</tt><tt class="py-name">ioctl</tt><tt class="py-op">(</tt><tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">stderr</tt><tt class="py-op">.</tt><tt class="py-name">fileno</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">termios</tt><tt class="py-op">.</tt><tt class="py-name">TIOCGWINSZ</tt><tt class="py-op">,</tt> <tt class="py-string">'xxxx'</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt>  <tt class="py-line">                <tt class="py-keyword">except</tt> <tt class="py-name">ValueError</tt><tt class="py-op">:</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line">                        <tt class="py-name">mxy</tt><tt class="py-op">,</tt> <tt class="py-name">mxx</tt> <tt class="py-op">=</tt> <tt class="py-name">curses</tt><tt class="py-op">.</tt><tt class="py-name">newwin</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">,</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">getmaxyx</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt>  <tt class="py-line"> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt>  <tt class="py-line">                <tt class="py-comment"># return safe values, i.e. slightly smaller.</tt> </tt>
<a name="L83"></a><tt class="py-lineno"> 83</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-keyword">return</tt> <tt class="py-op">(</tt><tt class="py-name">mxy</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">,</tt> <tt class="py-name">mxx</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">)</tt> </tt>
</div><a name="L84"></a><tt class="py-lineno"> 84</tt>  <tt class="py-line"> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt>  <tt class="py-line">        <tt class="py-comment">#def useable_space(self, rely=0, relx=0):</tt> </tt>
<a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-comment">#       mxy, mxx = curses.newwin(0,0).getmaxyx()</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-comment">#       return (mxy-1-rely, mxx-1-relx)</tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt>  <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="ScreenArea.widget_useable_space"></a><div id="ScreenArea.widget_useable_space-def"><a name="L89"></a><tt class="py-lineno"> 89</tt> <a class="py-toggle" href="#" id="ScreenArea.widget_useable_space-toggle" onclick="return toggle('ScreenArea.widget_useable_space');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="npyscreen.screen_area.ScreenArea-class.html#widget_useable_space">widget_useable_space</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">rely</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">,</tt> <tt class="py-param">relx</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ScreenArea.widget_useable_space-collapsed" style="display:none;" pad="+++" indent="++++++++++++"></div><div id="ScreenArea.widget_useable_space-expanded"><a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line">                <tt class="py-comment">#Slightly misreports space available.</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-name">mxy</tt><tt class="py-op">,</tt> <tt class="py-name">mxx</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt><tt class="py-op">-</tt><tt class="py-number">1</tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt>  <tt class="py-line">                <tt class="py-keyword">return</tt> <tt class="py-op">(</tt><tt class="py-name">mxy</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">-</tt><tt class="py-name">rely</tt><tt class="py-op">,</tt> <tt class="py-name">mxx</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">-</tt><tt class="py-name">relx</tt><tt class="py-op">)</tt> </tt>
</div><a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line">         </tt>
<a name="ScreenArea.refresh"></a><div id="ScreenArea.refresh-def"><a name="L94"></a><tt class="py-lineno"> 94</tt> <a class="py-toggle" href="#" id="ScreenArea.refresh-toggle" onclick="return toggle('ScreenArea.refresh');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="npyscreen.screen_area.ScreenArea-class.html#refresh">refresh</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="ScreenArea.refresh-collapsed" style="display:none;" pad="+++" indent="++++++++++++"></div><div id="ScreenArea.refresh-expanded"><a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line">                <tt id="link-4" class="py-name"><a title="npyscreen.pmfuncs" class="py-name" href="#" onclick="return doclink('link-4', 'pmfuncs', 'link-0');">pmfuncs</a></tt><tt class="py-op">.</tt><tt class="py-name">hide_cursor</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt>  <tt class="py-line">                <tt class="py-name">_my</tt><tt class="py-op">,</tt> <tt class="py-name">_mx</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-5" class="py-name"><a title="npyscreen.screen_area.ScreenArea._max_physical" class="py-name" href="#" onclick="return doclink('link-5', '_max_physical', 'link-2');">_max_physical</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">curses_pad</tt><tt class="py-op">.</tt><tt class="py-name">move</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">,</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line">                 </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line">                <tt class="py-comment"># Since we can have pannels larger than the screen</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-comment"># let's allow for scrolling them</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt>  <tt class="py-line"><tt class="py-comment"></tt>                 </tt>
<a name="L102"></a><tt class="py-lineno">102</tt>  <tt class="py-line">                <tt class="py-comment"># Getting strange errors on OS X, with curses sometimes crashing at this point. </tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-comment"># Suspect screen size not updated in time. This try: seems to solve it with no ill effects.</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line"><tt class="py-comment"></tt>                <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line">                    <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">curses_pad</tt><tt class="py-op">.</tt><tt id="link-6" class="py-name" targets="Method npyscreen.screen_area.ScreenArea.refresh()=npyscreen.screen_area.ScreenArea-class.html#refresh"><a title="npyscreen.screen_area.ScreenArea.refresh" class="py-name" href="#" onclick="return doclink('link-6', 'refresh', 'link-6');">refresh</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_from_y</tt><tt class="py-op">,</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_from_x</tt><tt class="py-op">,</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_aty</tt><tt class="py-op">,</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_atx</tt><tt class="py-op">,</tt><tt class="py-name">_my</tt><tt class="py-op">,</tt><tt class="py-name">_mx</tt><tt class="py-op">)</tt> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt>  <tt class="py-line">                <tt class="py-keyword">except</tt> <tt class="py-name">curses</tt><tt class="py-op">.</tt><tt class="py-name">error</tt><tt class="py-op">:</tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line">                        <tt class="py-keyword">pass</tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_from_y</tt> <tt class="py-keyword">is</tt> <tt class="py-number">0</tt> <tt class="py-keyword">and</tt> \ </tt>
<a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">show_from_x</tt> <tt class="py-keyword">is</tt> <tt class="py-number">0</tt> <tt class="py-keyword">and</tt> \ </tt>
<a name="L110"></a><tt class="py-lineno">110</tt>  <tt class="py-line">                <tt class="py-op">(</tt><tt class="py-name">_my</tt> <tt class="py-op">&gt;=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lines</tt><tt class="py-op">)</tt> <tt class="py-keyword">and</tt> \ </tt>
<a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line">                <tt class="py-op">(</tt><tt class="py-name">_mx</tt> <tt class="py-op">&gt;=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">columns</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">ALL_SHOWN</tt> <tt class="py-op">=</tt> <tt class="py-name">True</tt> </tt>
<a name="L113"></a><tt class="py-lineno">113</tt>  <tt class="py-line"> </tt>
<a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line">                <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line">                        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">ALL_SHOWN</tt> <tt class="py-op">=</tt> <tt class="py-name">False</tt> </tt>
</div></div><a name="L116"></a><tt class="py-lineno">116</tt>  <tt class="py-line">                 </tt>
<a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line"> </tt>
<a name="test_loop"></a><div id="test_loop-def"><a name="L118"></a><tt class="py-lineno">118</tt> <a class="py-toggle" href="#" id="test_loop-toggle" onclick="return toggle('test_loop');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="npyscreen.screen_area-module.html#test_loop">test_loop</a><tt class="py-op">(</tt><tt class="py-param">screen</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="test_loop-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="test_loop-expanded"><a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line">        <tt class="py-name">A</tt> <tt class="py-op">=</tt> <tt id="link-7" class="py-name" targets="Class npyscreen.screen_area.ScreenArea=npyscreen.screen_area.ScreenArea-class.html"><a title="npyscreen.screen_area.ScreenArea" class="py-name" href="#" onclick="return doclink('link-7', 'ScreenArea', 'link-7');">ScreenArea</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line">        <tt class="py-name">A</tt><tt class="py-op">.</tt><tt id="link-8" class="py-name"><a title="npyscreen.screen_area.ScreenArea.refresh" class="py-name" href="#" onclick="return doclink('link-8', 'refresh', 'link-6');">refresh</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line">         </tt>
<a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">         </tt>
<a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line"> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt>  <tt class="py-line"> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt>  <tt class="py-line"><tt class="py-keyword">if</tt> <tt class="py-name">__name__</tt> <tt class="py-op">==</tt> <tt class="py-string">'__main__'</tt><tt class="py-op">:</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">        <tt class="py-name">curses</tt><tt class="py-op">.</tt><tt class="py-name">wrapper</tt><tt class="py-op">(</tt><tt id="link-9" class="py-name" targets="Function npyscreen.screen_area.test_loop()=npyscreen.screen_area-module.html#test_loop"><a title="npyscreen.screen_area.test_loop" class="py-name" href="#" onclick="return doclink('link-9', 'test_loop', 'link-9');">test_loop</a></tt><tt class="py-op">)</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line">        <tt class="py-keyword">print</tt> <tt class="py-string">"The circle is now complete"</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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